Door-check.



J. P. DENGLER.

DOOR CHECK.

APPLLGA'lmN FILED JUNE 13.1908.

Patented Dec. 15, 19084 fax luvuanfoz Cfr JOHN T. DNNGLER, OFlll'llntDELPIUA, IViNNSYLVANA.

noon-CHECK.

Specification of Letters Patent. y

Patented Dec. 15, 1908.

l Application led June 13, 1908. Serial No. 438.307.

To all tlf/zomfit may concern:

Be it known that l, Jon-N l). DENGLEn, a citizen ot' the 4lniteflStates, residing 'at lhiladelphia, in the eountiv ol' Philadelphia andState ot: Pennsylvania, hareinvented certain new and uset'iillmprovelnents in Door-Cheeks, ot which the following is a speeitieation.

My invention relates to door checks, and partieularl)Y to .ifrictionalcheeks, the object ot the inrtnition -being to preside a cheek whichshall permit a spring-actuated door in closing to inoi'e easiliY overthe lirst part ot its path, to be gradualhv cheeked as it nears the doorjainh, and tinallhi1 to be practically l'reed fromltrietional engagementto permit the. full action ot' the door spring when the door is within at'ew inches ol ilie easing.

'lo these ends my invention consists in a l'rictional door check armharing a graduall)r increasing thickness trom. its rear to a point nearto its tree or lorward end and then Aa rapidly decreasing thickness tothis end, in combination with a device attached to the. doort'rictionall)v engaging said arm.

.i have shown one embodiment oi" my invention -in the accompanyingdrawings wherein7 f lt`igure .l is a perspectivi'ry View ol' the upperpart ol a door with my device attached. Fig. l2, is a side elevation oltthe check. Fig. 3, is a transverse section across the door bracket. andthe arm. ltig. 4, is a perspees tire ot the. door bracket detaehed ltig.5, is a tragmentar),v side elevation ot' the lorward end otx` the arm,the. lriction disk being at the checking point, and Fig. t3, is thesaine as lt'ig. 5, the l'iiciion disk however being l e `yond thechecking point.

[Like rel'erence characters throughout. the se\f'e.ral views designatelike parts.

My cheek is intended to be applied to a door, gate or other hingedclosure ol" like character, and though l have shown it as ap plied to adoor A, l do not` wish to be limited thereto. 'lhe cheek consistsbroadly ot an arm 2 ot" an)` cross sectional t'orin pivotalh connectedat its rear end to a gate post or as shown in the drawings, to the doorjainh l. 'lhis arm acts in conjunction with e spring pressed l'rictionslide carried on the door, the slide moving along the arin as the dooris ope-ned yr closed- 'lhe face. of the arm. which contaets'iwith theslide is so made that it will gradually increase the t'rictional contactbel t i t tween the slide and arm astlie door closes, under theimpulsion ot the. spring C.

ln detail my preferred construction coniprises a tlat arm l slotted asat 3 from the t'ront end to a point adjacent to the rear end. 'lhe rearend ot the arin pii'oted by a pin tle bolt t to a bracket 5 forhorizontal moreinent, the bolt being provided with a wing nut ti and anordinata" uut t5 whereby the arm mayY he adjusted to a looser orltighter engagement with the bracket 5.

Une tace ot the arm, prel'erahlv the under tace is tlat t'or slidingcontact with the upper tace ot an angular bracket T attached by screwsto the tare ot the door-at its upper margin. 'lhe other tace ol' thearml is eut aii'a)v hetiond the rear end ot the, slot 3' as at ZZ. andt'rointhis point int-lines upwardly ydln-it is the plate gradualh`thickens) to the point 2', which is located short ofthe termination ot'the slot CYS. ltroin this point 2 the upper tace. ol'` the arm inelinesdownward to the end thereot', that is the arin lessens in thickness.

Passing loosely through the slot 3 and in one of the perl'orations S inthe bracket 7 is a bolt Q, the upper end ot' which is provided with anotched' head tt", and thelower ond with screw threads, a plain nut anda Wing nuty ttt. Resting on nut it) is a washer 11. Between the washeril and the under side ol the bracket T is a spring l2. By turning thenuts ttt, 10 the spring may be compressed to. a greater or less degreebetween Athe washer and the bracket, and hence will draw downward withmore er less st reugth upon the bolt t). Between the head .3 ot'` theholt and the upper lace ol the arm 2 is a contact. piece or frictionplate i3 ol' disk t'ori-.iwliieh contacts with the upper l'aee ol' thearm. It will be plain that h i" screwing the nuts. lt), 10 'npward onthe holt the l'rietion disk will he drawn down against they up )er laceot the arm, thus increasing the t'rii-.tional contact ol' the disk withthe arm. .lt will be plain also that by loosening the said nuts the'friction lwtween the arm and disk may be. reduced to an)r degreedesired. n

ln service the. nuts it), l0' are so adjusted. that the disk' l hearsbut lightly against the arin when the disk is iu its rearniost position.

ns the door closes however the bolt 9 and the disk are carried along thearm. The gradual thickening ol the arm Wedges outward on the disk 13compressing the spring and thus gradually increasing the frictionalcontact between the disk and the arm until the disk reaches point 2wherel the maximum frictional resistance occurs. At this point the dooris some inches 'from being completely closed, the number of these inchesbeing a matter of adjustment as will be later described. As the frictiondisk passes the point 2 however, as shown in Fig. 6, the tension of thespring is relaxed, there is less frictional Contact and the door springC is free to act toclose the door inv the usual manner.

- I have shown thebracket 7 with a plurality of holes 8. This permitsthe point at which the door will be freely acted upon by its s ring tobe adjusted, as the further along the bracket is set, the less distancethe door will move inclosing before it reaches and passes the point 2,and is free to move under the impulsion of the spring C. Of course thebracket 7 might be set `upon the door at any desired'place and this sameresult be accomplishecl, but the plurality of perfor-ations 8 permitsthis point of rapid closing to be adustable Without the necessity ofshifting the bracket itself. [It will be obvious also that by tighteningthe nuts l0, 10 upon the bolt 9 the door may be held at any desiredposition, and also that it may be so tightened that the door would notunder ordinary circumstances fully close, but would be held somewhatopen by the disk reaching the oint 2, at which point the spring 12 wouldbe so com ressed as to hold the door from closing. llt will also be seenthat the door may be easily closed or opened by hand in the usual mannerand that the device is capable of reventing the slamming of doorswhether t e door is acted upon by a door Spring or by a person passingtherethrough.

While I have shown whatl I believe is the preferred construction of. mydoor check, I do not wish to be limited thereto ,"as the principlethereof could be embodied Vin many forms. l f" r y My device is simple,easily a plied, and may be uicklydisassembled when desired or entirdlydetached. I have shown the checkv as applied to the upperend of a doorand door jamb and to a case where the face of the 4door jamb is parallelwith the face of the' door when closed. It is obvious however, that asthe bracket 5 is pivotally connected to the shank of'the arm 2, thebracket maybe as easily applied to a jarnb which rejects out 'at a rightangle to the face of the oor. The check may be ap lied either to the uper end of the door as sfiown or to the middlh portion thereof. A

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. A frictional door check having an arm adapted to be pivotd at one endto a doorv the face of said arm and in frictional contact therewith,land ine/ans whereby the tension of said spring may be increased ordecreasml, said arrn being relatively thin at its rear end, thengradually thickened towards its forward end and then decreased inthickness to its extremity. v

2. A frictional door check havinga bracket adapted to be supported on adoor, a friction'al contact piece mounted in said bracket adjacent toone face thereof, an ari n adapted to bc pivcted-at one end to a doorjainb, said arin passing between the door bracket and the contact piecein lrictional contact therewith and movable there across, and'a springfor forcing the contact piece against thc bracket, said arm beingrelatively thin at its rear end, then gradually thickening to itsforward end, and then decreased in tl-iickucss to its extremity.

3. In a door check, a bracket adapted to be attached to a door, abracket adapted to be attached to a door janib, an arin pivotcd at itsrear end to the door jainb bracket, a bolt passing through the doorbracket, a frictional contact plate on thc'upper end of the boltcontacting with said arm, a spring mounted on saidbolt retracting thesaine, and means connected therewith for regulating the tension of saidspring, said arm being relatively thin at its rear end, thengraduallythickening towards its forward end and then decreasing inthickness to its extremity.

4, In a door check, a bracket adapted to be attached'to a door, abracket adapted to be attached to a door jamb, an arin pivoted at itsrear end to the door jainb bracket and having a slot longitudinallytherethrough, a bolt passing through the 'door bracket and through saidslotted arm, a frietional contact plate on the upper end of said boltcontacting with the upper end of said arm, and a spring mounted-thereonfor retracting the saine, said arin being relatively thin at its rearend at the beginning of said slot, then thickcniiig towards lits forwardend and then decreasing in 'thickness to its extremity.

5. In a door check, a bracket adapted. to be attached to a door jamb abracket adapted to be attached to a door and provided with a series ofperforations in line with each other, a slotted arm pivoted at its rearend to the door jainb bracket, a bolt passing through one of theperforations of the door bracket and through the said slot in the arm,africtional contact plate on the upper end of the bolt contacting withsaid arm, and a spring mountedv on said bolt for retracting the saine,said arm being relatively thin at its rear end, then gradually growingthicker towards its forward-end, the maximum of said thickness occurringshort'of the end of the slot the arm, und than deci-casing in 'thicknesslo its azitreniity.

in u door check, n bracket fnlsiplud Lr be attached tu u door frame, nlnngitinjliiuiily :Lslocd am; pivotcd it one und m sind brrwlcrt formweinmil in u horizontal plane, n, annie fur xfotiiig; Suid zii-n1 tothe vbrzicflrt pruvirhicl with n nur, n bracket adaptud tu be zitvtarhudto a duur having n lint upper iure upon which the :urn vests, uuid hicehaving; :L Serio@` ui parlor-allons, :i bull; passing through one nl thepnrforeitiuiis nl' Lin door lnz'whut und through the slot nl' Llnl urni,:i lric/iniml Contact plate on the upper end nl' ih@ buity contactingwith the upper faire of said :ii-ni, n unilud spring surrnnnding:rsfr-id huily lwlou Suid bracket, :ind n nui` un said 'nuit i'urruintivrly lhin nl; its reni' und, than grudunlli' thickeningtownrds'lts iorward 9nd rmirhiny; its` innrxiniuni thiuknuss ull u,punit jus'dslmri,

loi thu und of s( .d slut., und then hrronsing f sing ,hc smid spring,.said nrxn bring; ninand ln'wing nn outwardly 'projecting portion uilh nI hrt uppcr liuto, said portion bring p0roinnnl, n slnliud nrln pivotcdniv one ond to lha door jannh bruchut, :L pintlo holtA fur plv ning saidfuni, n bolt passing through thv duur bracket and through smid slnltud.iu-n1, n contact dish loosely suwounding 1hr` uppur unl nl' :mid holt:md runlurling with [hr np- ;inr incr: nl' said anni, :i nui` on tholowvr und of said holt, n Washer supported hy' lh@ nut, :rfid :i coihdspring nnnintrd un unid boil, und huid hulrroun sind unshor :1nd theunder faire, nl' Suid duur ln'ucluiet, said nrni bring ruhi- Llvrlylhin'nl'` its ruin' end lwlrinnini; nl, u. point rum-wurd o]l the snidslotl :1nd thun gradually growing thicker nl, iis forward und rcnrhinggiis maximum thickness ai n punit

